The River of Time in the Primordial World

The River of Time was merely the River of Time, not the true Time Great Dao.

Otherwise, let alone entering the River of Time, Mysterious Immortals would not even be able to sense its existence.

The River of Time was merely a river born from a trace of the Time Great Dao's origin.

Because a world needed a River of Time, a River of Time came into being.

The River of Time in a Great Thousand World was born from the origin of the Time Great Dao.

Meanwhile, the Rivers of Time in Small Thousand Worlds and Middle Thousand Worlds were born from the origin of the Time Law.

Of course, since it was born from the origin of the Time Great Dao, let alone Mysterious Immortals, even Grand Unity Golden Immortals could not touch the Origin of the Great Dao before attaining the Dao.

So why could Mysterious Immortals sense the River of Time in the Primordial World, and even enter it?

That was because of the cultivation system.

According to the setting, Mysterious Immortals in the Primordial World's Origin Immortal Dao System could sense the Primordial World's River of Time and enter it for a short while.

It was like an authority.

The Mysterious Immortal realm was equivalent to acquiring the authority to sense and enter the Primordial River of Time.

If a Mysterious Immortal from the Primordial World went to another Great Thousand World, he would not possess that authority. Without permission, he naturally could not sense the River of Time in another Great Thousand World, much less enter it.

The saying that all paths of the Great Dao ultimately led to the same destination only applied to the Great Dao itself. To touch the Origin Great Dao, one had to be a Twenty-sixth Order Grand Unity